A tech number has even number of digits. If the number is split in two equal halves, then the square of sum of these halves is equal to the number itself. Write a program to generate and print all four digits tech numbers.
Example:
Consider the number 3025
Square of sum of the halves of 3025 = (30 + 25)2
= (55)2
= 3025 is a tech number.
public class TechNumbers
{
public static void main(String args[]) {
for (int i = 1000; i <= 9999; i++) {
int secondHalf = i % 100;
int firstHalf = i / 100;
int sum = firstHalf + secondHalf;
if (i == sum * sum)
System.out.println(i);
}
}
}2025
3025
9801
Press any key to continue . . .
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.